About this 3D model

A teachable moment I print out and give to kids at my children's school. I use them to explain 3D printing. They hang them on their backpacks. Switching colors at about 33% and 80% complete can give the number, background and letter/border contrasting colors. The "3" is thin enough that it is very translucent when held up to the light. (My son was running the printer for this batch, and he likes red and yellow...) The tag is modeled with a brim to prevent lifting. When I print multiples, I overlap the brims to reduce the number of edges that could lift.